76 lines
2.2 KiB
Go
76 lines
2.2 KiB
Go
/*
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Copyright The Velero Contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package nodeagent
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import (
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"context"
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"fmt"
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"github.com/pkg/errors"
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"k8s.io/client-go/kubernetes"
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"github.com/vmware-tanzu/velero/pkg/util/kube"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
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)
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const (
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// daemonSet is the name of the Velero node agent daemonset.
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daemonSet = "node-agent"
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)
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var (
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ErrDaemonSetNotFound = errors.New("daemonset not found")
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)
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// IsRunning checks if the node agent daemonset is running properly. If not, return the error found
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func IsRunning(ctx context.Context, kubeClient kubernetes.Interface, namespace string) error {
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if _, err := kubeClient.AppsV1().DaemonSets(namespace).Get(ctx, daemonSet, metav1.GetOptions{}); apierrors.IsNotFound(err) {
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return ErrDaemonSetNotFound
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} else if err != nil {
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return err
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} else {
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return nil
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}
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}
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// IsRunningInNode checks if the node agent pod is running properly in a specified node. If not, return the error found
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func IsRunningInNode(ctx context.Context, namespace string, nodeName string, podClient corev1client.PodsGetter) error {
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if nodeName == "" {
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return errors.New("node name is empty")
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}
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pods, err := podClient.Pods(namespace).List(ctx, metav1.ListOptions{LabelSelector: fmt.Sprintf("name=%s", daemonSet)})
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if err != nil {
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return errors.Wrap(err, "failed to list daemonset pods")
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}
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for i := range pods.Items {
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if kube.IsPodRunning(&pods.Items[i]) != nil {
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continue
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}
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if pods.Items[i].Spec.NodeName == nodeName {
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return nil
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}
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}
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return errors.Errorf("daemonset pod not found in running state in node %s", nodeName)
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}
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